Air purifier



FIG. 1 is a front, right-side, and top view of an air purifier showing the new design.

FIG. 2 is a front elevation view of the air purifier.

FIG. 3 is a back elevation view of the air purifier.

FIG. 4 is a left-side elevation view of the air purifier.

FIG. 5 is a right-side elevation view of the air purifier.

FIG. 6 is a bottom plan view of the air purifier; and,

FIG. 7 is a top plan view of the air purifier.

The broken lines depict elements of the air purifier that form no part of the claimed design. 

CLAIM The ornamental design for an air purifier, as shown and described. 